package lab2.text32;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by Administrator on 2017/11/9.
 */
public class Text {
    public static void main(String[] args) {
        Map<String,String> person=new HashMap<>();
        person.put("id","1");
        person.put("name","张三");
        person.put("gender","男");
        person.put("age","25");
        person.put("love","爱学习Java");
        //遍历map
        for(Map.Entry<String,String>entry:person.entrySet()){
            System.out.println(entry.getKey()+","+entry.getValue());
        }
        System.out.println("map集合的大小是："+person.size());
        for(Map.Entry<String,String>entry:person.entrySet()) {
            if (entry.getKey().equals("age")) {
                person.remove(entry.getKey());
            }
        }
            System.out.println("map集合的大小是："+person.size());
    }
}
